RC India

RC Equipments => Batteries and Chargers => Topic started by: MohitJindal on January 16, 2013, 09:55:42 AM



Title: Ways to attach Battery.
Post by: MohitJindal on January 16, 2013, 09:55:42 AM
Hi; I want to give extra current to the DC motor; without damaging the SMD circuit board. The circuit board is giving 1amp to the motor. I want to replace motor with big 5amp motor.Is there any way to attach extra battery which provide power only to the motor, not back to circuit board  :help: :banghead: :(


Title: Re: Ways to attach Battery.
Post by: lastRites on January 16, 2013, 10:11:47 AM
Yeah there are a number of ways to accomplish that. Just tell us if you need to control the speed(through pwm) and if you need bidirectional control.


Title: Re: Ways to attach Battery.
Post by: MohitJindal on January 16, 2013, 10:19:15 AM
Its a DC servo motor. So both PWM and bidirectional.


Title: Re: Ways to attach Battery.
Post by: lastRites on January 16, 2013, 01:14:59 PM
Servo? Then why would you need a different controller???


Title: Re: Ways to attach Battery.
Post by: MohitJindal on January 16, 2013, 01:20:49 PM
I don't want different controller. I just want to give extra power to dc motor without burning the servo circuit.


Title: Re: Ways to attach Battery.
Post by: lastRites on January 16, 2013, 01:31:22 PM
Can you be a little more specific please? Here are your options:
PWM and UNIdirection : Use power MOSFETS or power transistors (MJE series).
Non-PWM and bidirectional : Relay H-Bridge
You have to combine both the above to get bidirectional pwm control. PWM on the power supply and direction using the relays.


Title: Re: Ways to attach Battery.
Post by: MohitJindal on January 16, 2013, 01:38:29 PM
I want to combine both but how? Do you have any circuit diagram ? Any readymade part you know ?


Title: Re: Ways to attach Battery.
Post by: MohitJindal on January 17, 2013, 03:08:44 PM
I attached the motor circuit. I hope that will help you to understand. All I want is to give more current to the DC motor without burning the circuit. :help: